Multiple gas burner with pressure-governed valves



0, 1950 H. s. MINSTER 2,494,190

MULTIPLE GAS BURNER WITH PRESSURE-GOVERNED VALVES Filed Dec. 4, 1945 Patented Jan. 10, 1950 T Y F F 1 CE MULTIPLE GAS" BiJRNER WITH r'REssURE- GOVERNED vApvEs,

Henry S. Minster, Roscmont, Pa.,'assignor to Roberts & Mander. Corporation, a corporation of Delaware This invention relates to a burner unit and more particularly to that type of burner unit referred to as double-duty, having high and low flame chambers usually designated as simmer and main gas chambers.

While such burners are in common use, those of which I am familiar with are usually provided with a pair of mixer tubes communicating with the several chambers and with a dual valve which directs gas to one or the other of these tubes. Such a structure is obviously costly to manufacture and an important object of the invention is the provision of a burner of this character requiring only a simple control valve and a single mixer tube.

A further and more specific object of the invention is the provision in a structure of this character, of an arrangement whereby selection of the chamber operating may be made by simple adjustment of an ordinary valve, the selection of the chamber occurring as a function of the pressure formed in the mixer tube. These and other objects I attain by the construction shown in the accompanying drawings wherein:

Fig. 1 is a plan View partially broken away of a gas burner embodying my invention; and

Fig. 2 is a transverse sectional view therethrough.

Referring now more particularly to the drawings, numeral l designates a burner body having, as at present illustrated, an inner or main burner chamber H and an outer or simmer chamber l2 provided with the usual gas outlet ports l3. A single mixer tube I4 is provided having an ordinary control valve l5 by means of which gas is supplied to the tube. This tube underlies both chambers H and H at its burner engaging end and is separated therefrom by a partition plate l6. Partition plate It has ports i1 and [8 communicating with chambers II and i2, respectively. These ports being controlled by valves l9 and 20 which, as at present illustrated, are pivotally connected to a lever 2| pivoted to the under surface of the partition plate as at 22.

As will be noted, the port I! which communicates with the main burner chamber is a considerably greater area than the port l8 and the valve controlling the port I! is correspondingly larger than the valve 20 controlling port l8. This, plus an unbalanced condition in lever 2! results in maintenance of valve 20 in a normally open position and valve IS in a normally closed position. This condition will be maintained as long as the opening of valve I5 does not create sufficient back pressure in tube M to disturb the balance. When,

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however, the valve I5 is sufiiciently opened, the pressure in tube l4, acting upon valve l9, will open the same, admitting gas to the main burner chamber and moving the simmer chamber valve 2! toward closing position. Obviously, the pressure need not entirely close valve 20 in which event the burner ports i3 of both chambers are effective.

The illustrated method of obtaining the balance between valves l9 and 20 necessary to prepare control of the burner chambers is obviously but one of many possible arrangements and I accordingly do not wish to be understood as limiting myself to this structure except as hereinafter claimed.

I claim:

1. In a double-duty gas burner, a pair of burner chambers, a single tube to supply both said chambers with a combustible mixture, one of said chambers being normally in communication with said tube and means controlled by pressure in said tube for establishing communication between said tube and the second chamber and terminating communication between the first chamber and the tube.

2. In a double-duty burner a pair of burner chambers, a single tube to supply both said chambers with a combustible mixture, valved ports connecting said tube and said chambers, the valve of one of said ports being normally closed and of the other thereof normally open and means controlled by the pressure in said tube for reversing the positions of said valve.

3. In a double-duty burner a pair of burner chambers, a single tube to supply both said chambers with a combustible mixture, valved ports connecting said tube and said chambers, a

connection between the valves, including a bias ing means normally maintaining one of the valves open and the other thereof closed, said biasing means yielding at a predetermined pressure in said tube to permit such pressure to open the last named valve.

4. In a double-duty burner a pair of burner chambers, a single tube to supply both said chambers with a combustible mixture, valved ports connecting said tube and said chambers, a connection between the valves, including a biasing means normally maintaining one of the valves open and the other thereof closed, said biasing means yielding at a predetermined pressure in said tube to permit such pressure to open the last named valve, and close the first named valve.

5. In a double-duty burner a pair of burner chambers, a single tube to supply both said chambers with a combustible mixture, valved ports connecting said tube and said chambers, the valves of said ports seating toward the tube and having different areas exposed to pressure in said tube, and a pivoted lever connecting the valves of said ports and eccentrically pivoted intermediate its ends to provide with said valves 9, structure unbalanced in favor of the larger valve so that the latter normally is closed and the other valve open but is yieldabie at a predetermined pressure in N 7 ally supported and providing with said valves 8. structure unbalanced in favor of the valve of greater area so that the latter normally is closed and the other valve open but is yieldable at a predetermined pressure in the tube to cause such pressure to open said valve of greater area and close said other valve.

HENRY S. MINSTER.

REFERENCES CITED The. following, references are of record in the tile of this patent:

UNITED STATES PATENTS l Ninnber Name Date 553,594 HD1186 Feb. 5, 1895 13043.31 Bergen-Stierhof May 27, 1919 2,348,104 Beddoes May 2, 1944 

